13003221977 has 2 divisors, whose sum is σ = 13003221978. Its totient is φ = 13003221976.

The previous prime is 13003221949. The next prime is 13003222007. The reversal of 13003221977 is 77912230031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7699887001 + 5303334976 = 87749^2 + 72824^2 .

It is a cyclic number.

It is not a de Polignac number, because 13003221977 - 2¹⁰ = 13003220953 is a prime.

It is not a weakly prime, because it can be changed into another prime (13003221937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6501610988 + 6501610989.

It is an arithmetic number, because the mean of its divisors is an integer number (6501610989).

Almost surely, 2^13003221977 is an apocalyptic number.

It is an amenable number.

13003221977 is a deficient number, since it is larger than the sum of its proper divisors (1).

13003221977 is an equidigital number, since it uses as much as digits as its factorization.

13003221977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15876, while the sum is 35.

The spelling of 13003221977 in words is "thirteen billion, three million, two hundred twenty-one thousand, nine hundred seventy-seven".